Actually it shouldn't take long.  If I took a city phone book and tore it into pieces and then gave you 9 pages it's possible that 7 are sequential and the other two random from later in the book.  "Based on documented records we can say that the bulk of the people in Colusa had last names starting with the letters B, C, and D with a few having last names starting with H and some with S.  If you find a letter sourced from anyone with the last name Thompson it's likely a forgery."

Under 200 serials from a base of 5,000 isn't statistically significant. Especially given those 200 will be in larger groups on single records.  So if I find an issue document with 30 guns, 3 chests, it's well over 10% of found numbers and paints an inaccurate picture of the range.

FWIW Mook's list had him owning 132231 - listed as a carbine.  I own 131545 and I'm comfortable with it.

It's unsafe to poke into the range with SRS's records and draw conclusions.  Best to establish the bookends instead.